Correspondence.— Miscellaneous. 191 
and three new species to that genus. C. strangulatum, D’ Arch., had 
been previously used as a type-species by Piette * for his new genus 
Exelissa.t The characteristics of the genus, as pointed out by Piette, 
are—Shell scalariform ; aperture orbicular, entire ; last whorl cylin- 
drical, contracted at the base, with a tendency to separate from the 
axis. Ailvertia is therefore a synonym of Ezelissa. All the shells 
of this genus, which is allied to Rissoa and Scalaria, are very 
small; they occur in the Inferior Oolite and upwards to the Great 
Oolite.—Yours, &c., Ratrew Tate, F.G.S. 
Coronet G. GREENWOOD has favoured us with a letter on the 
improbability of the existence of real Meteoritic stones. The study 
of the subject of Meteorites in a good Cyclopzedia, or in Somerville’s 
‘Connexion of the Sciences,’ or, better still, if possible, in the many 
papers in the ‘ Philosophical Magazine,’ and an examination of the 
specimens themselves in the British Museum, will serve our corre- 
spondent far better than putting his doubts on paper. 
MISCELLANEOUS. 
———>—_ 
Tur GroLtocicar Society oF FRANCE will hold its Extraordinary 
Meeting this year at Marseilles, commencing on the 9th of October. 
Excursions will be made to localities where a considerable portion 
of the Triassic, Jurassic, Cretaceous, and Tertiary formations can be 
studied. It is also purposed to examine the porphyritic masses of 
Esterel (Toulon). The well-known geologists MM. Coquand and 
Matheron will act as local guides. 
AMONG THE PRIZE-QUESTIONS proposed by the Imperial Academy 
of Sciences, Vienna, at the Anniversary Meeting, May 30, 1864, the 
following relates to Geology. The Academy requires ‘a precise 
mineralogical and, as far as necessary, a chemical investigation of 
the greatest number of Eruptive Rocks occurring in the Secondary 
deposits of the Austrian Empire, and a parallel of these rocks with 
known older and younger eruptive rocks of Austria and other coun- 
tries. The papers are to be transmitted to the Academy before 
December 81, 1866; the name of the prize-holder is to be pro- 
claimed at the Anniversary Meeting in May 30 of the following 
year. The prize is 200 Imperial ducats in gold (about £100 
sterling). 
A BED OF COAL, said to be eight feet thick, and supposed to be of 
Oolitic age, has been found in the bed of a stream running into the 
Kawa-kawa River, in the Bay of Islands, New Zealand. The coal 
burns freely, with a bright flame, very little smoke, and scarcely any 
residue.— Daily Southern Cross, Auckland, N.Z., April 30, 1864. 
* Bull. Soe. Géol. France, 2° sér. vol. xvill. p. 14. 1861. 
{ From ’EfeAicow, I unfold. 
